<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../js/jquery-1.11.3.js"></script>
    <script>
        $(document).ready(function () {
            //这里开始写代码
        });
        $(function(){
            //这里开始写代码
        });

        $(function () {
            alert('a');
            $('input').click(function () {
                alert('点我');
            })
            console.log($('input'))
        });
    </script>
</head>
<body>
<input type="button" value="点我">
<script>
    alert('b');
</script>

</body>
</html>